This week’s newsletter notes a vulnerability in Bitcoin Core versions that are already past end-of-life, asks for help testing release candidates of the next major version of Bitcoin Core, provides an update on the Bitcoin-Dev mailing list, describes recent discussions from the list, and links to a chapter about payment batching in Optech’s work-in-progress scaling techniques book. Also included are descriptions of several notable commits in popular Bitcoin infrastructure projects.

The Bitcoin Operations Technology Group (Optech) works to bring the best open source technologies and techniques to Bitcoin-using businesses in order to lower costs and improve customer experiences.

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